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91. 发明专利

JP2929033B2 失效
公开(公告)号：JP2929033B2
公开(公告)日：1999-08-03
申请号：JP20924090
申请日：1990-08-09
申请人： GOYO KENSETSU KK , RIKAGAKU KENKYUSHO
发明人： SHIROHARA OSAMU , TANAKA MINORU , SHIGEMATSU BUNJI , MIDORIKAWA KATSUMI , SEGAWA JUZABURO , TASHIRO HIDEO
IPC分类号： G01C15/00 , B63B35/00 , G01S5/16 , G01S17/42

92. 发明专利

JPH10265243A CONTROL OF REFRACTIVE INDEX OF SILICA GLASS 失效
公开(公告)号：JPH10265243A
公开(公告)日：1998-10-06
申请号：JP9152397
申请日：1997-03-26
申请人： RIKAGAKU KENKYUSHO
发明人： SUGIOKA KOJI , SHUROMO RUSHIN , CHANG CHI , WADA TOMOYUKI , TASHIRO HIDEO , TOYODA KOICHI
IPC分类号： G02B1/12 , C03C23/00 , G02B1/00 , G02B3/00
摘要： PROBLEM TO BE SOLVED: To make it possible to change a refractive index by irradiating silica glass with a vacuum UV laser beam of wavelengths below the wavelength that the silica glass has absorption in such a manner that photodissociation of an Si-O bond occurs in the region irradiated with this vacuum UV laser beam. SOLUTION: The quaternary higher harmonic waves of the laser beam generated by a Q switch Nd; YAG laser 10 are made incident on a hydrogen Raman cell 18 through total reflection mirrors 12, 14 and a condenser lens 16. The laser beam of the wavelength 266nm is subjected to Raman conversion and is emitted into a vacuum chamber 20 through a condenser lens 24 having 15 pieces of oscillation lines of the wavelengths 133 to 594nm. The laser beam of the wavelength 266nm having the largest pulse energy is cut by a dichroic attenuator 26. The remaining laser beam is cast through an MgF2 lens 28 and a contact mask 30 to a quartz glass substrate 32. The Si-O bond is thus converted to SiOx (x

93. 发明专利

JPH10148571A METHOD AND DEVICE FOR SPECTRAL MEASUREMENT 失效
公开(公告)号：JPH10148571A
公开(公告)日：1998-06-02
申请号：JP30833596
申请日：1996-11-19
申请人： RIKAGAKU KENKYUSHO
发明人： TASHIRO HIDEO , WADA TOMOYUKI , AKAGAWA KAZUYUKI
IPC分类号： G01J3/10 , G01J3/42 , H01S3/117
摘要： PROBLEM TO BE SOLVED: To enable fast wavelength sweeping and functional spectral measurement, by using, as a monochrome light source, a new wavelength variable laser. SOLUTION: Relating to wavelength variable laser, a laser medium 14 capable of oscillating laser in a specified wavelength region and a double refraction acoustic optical element 100 are assigned in a laser resonator, and with an piezoelectric element 22 connected to an RF power source 20, wavelength selection is performed by selecting the frequency of acoustic wave excited in the acoustic optical element 100. With the wavelength variable laser used instead of a spectral measurement light source of conventional spectrophotometer and a monochromator, functional spectral measurement is performed.

94. 发明专利

JPH09298332A SELECTABLE WAVELENGTH LASER OSCILLATOR OF VARIABLE WAVELENGTH LASER 失效
公开(公告)号：JPH09298332A
公开(公告)日：1997-11-18
申请号：JP13284796
申请日：1996-04-30
申请人： RIKAGAKU KENKYUSHO
发明人： WADA TOMOYUKI , AKAGAWA KAZUYUKI , TASHIRO HIDEO
IPC分类号： G02F1/35 , G02F1/11 , H01S3/094 , H01S3/106 , H01S3/108 , H01S3/16
摘要： PROBLEM TO BE SOLVED: To increase the repetition frequency of oscillation pulses to lower the excitation input by disposing a variable wavelength laser medium, a pulse stimulation laser and a photoacoustic optical crystal in a laser oscillator and attaching an acoustic wave input means to this optical crystal. SOLUTION: A laser crystal 18 to be a variable wavelength laser medium is disposed between a first and a second intermediate mirrors 14, 16 on the optical path of a laser oscillator. An photoacoustic optical crystal 20 having a birefringence to be a wavelength selecting crystal is disposed between the second intermediate mirror 16 and a total reflection mirror 12 on the optical path of the oscillator. An acoustic wave input means, i.e., piezoelectric element 26 driven by an RF power source 24 whose frequency is controlled by a personal computer 22 is attached to the optical crystal 20. A laser for incidence of a stimulation laser A on the interior of the laser oscillator uses a pulse excited laser 32.

95. 发明专利

JPH09297329A RAMAN LASER OSCILLATOR 失效
公开(公告)号：JPH09297329A
公开(公告)日：1997-11-18
申请号：JP13285496
申请日：1996-04-30
申请人： RIKAGAKU KENKYUSHO
发明人： WADA TOMOYUKI , AKAGAWA KAZUYUKI , TASHIRO HIDEO
IPC分类号： G02F1/35 , H01S3/30
摘要： PROBLEM TO BE SOLVED: To rapidly vary a wavelength variable speed of excitation light and wavelengths of stokes light and anti-stokes light by realizing wavelength selection of outgoing laser light by inputting an acoustic wave to an optoacoustic optical crystal with an acoustic wave input means. SOLUTION: Secondary stokes light (secondary anti-stokes light) of the wavelength according to the wavelength of the excitation light A occurs accompanying primary stokes light (primary anti-stokes light) reciprocating in a resonator, and emits from an outgoing side mirror as outgoing secondary stokes light (outgoing secondary anti-stokes light). At this time, a second harmonic of an Nd:YAG laser is used as the excitation laser light C, and a Ti:Al2 O3 laser crystal 204 is excited. Further, a frequency of an RF power source 208 is controlled according to the wavelength of the outgoing laser light to be emitted as the excitation light from the outgoing side mirror 200, and a piezoelectric element 210 is driven. Thus, only the light of the wavelength according to the frequency of the RF power source 208 is amplified, and laser oscillation is generated to be emitted as the excitation light A.

96. 发明专利

JP2632469B2 失效
公开(公告)号：JP2632469B2
公开(公告)日：1997-07-23
申请号：JP4873492
申请日：1992-03-05
申请人： RIKAGAKU KENKYUSHO
发明人： TASHIRO HIDEO , WADA TOMOYUKI
IPC分类号： G02F1/35 , H01S3/108 , H01S3/30

97. 发明专利

JP2587732B2 失效
公开(公告)号：JP2587732B2
公开(公告)日：1997-03-05
申请号：JP13238691
申请日：1991-03-25
申请人： RIKAGAKU KENKYUSHO
发明人： TASHIRO HIDEO , HAGIWARA KOJI , SUETSUGU YASUSHI
IPC分类号： G01B11/00 , G01B17/00 , G01J1/02

98. 发明专利

JP2578278B2 失效
公开(公告)号：JP2578278B2
公开(公告)日：1997-02-05
申请号：JP26775991
申请日：1991-10-16
申请人： DORYOKURO KAKUNENRYO KAIHATSU JIGYODAN , RIKAGAKU KENKYUSHO , MITSUBISHI JUKOGYO KK
发明人： MYAMOTO YASUAKI , HAGIWARA MASAYOSHI , HASEGAWA MAKOTO , INOE JUBUN , YATO YUMIO , TASHIRO HIDEO , YOSHIMURA KEIJI
IPC分类号： H01S3/08 , H01S3/30

99. 发明专利

JPH0794812A LASER BEAM PATH LENGTH VARYING APPARATUS 失效
公开(公告)号：JPH0794812A
公开(公告)日：1995-04-07
申请号：JP25897293
申请日：1993-09-24
申请人： RIKAGAKU KENKYUSHO
发明人： WADA TOMOYUKI , TASHIRO HIDEO , TOYODA KOICHI
IPC分类号： H01S3/082 , H01S3/094 , H01S3/108
摘要： PURPOSE:To obtain the desired optical path by changing the number of paths without change of the incident path and the emitting path in the multi-path optical system. CONSTITUTION:A laser beam path length varying apparatus 10 is provided with a multi-path optical system consisting of a concave reflection mirrors 104 and 106 with the concave reflection mirror 106 provided rotatable around the center axis O. A reflection mirror 12 is provided on the optical path of the laser beam D which is emitted from a through hole 106a of the concave reflection mirror 106 and the laser beam D emitted from the through hole 106a is reflected toward a reflection mirror 14 arranged on the center axis O. The reflection mirror 14 reflects the laser beam D incident from the reflection mirror 12 along the center axis O. These reflection mirrors 12 and 14 are rotated synchronously with rotation of the concave reflection mirror 106.

100. 发明专利

JPH0679478A DEVICE AND METHOD FOR WORKING BY VACUUM ULTRAVIOLET RAYS 失效
公开(公告)号：JPH0679478A
公开(公告)日：1994-03-22
申请号：JP23853292
申请日：1992-09-07
申请人： RIKAGAKU KENKYUSHO
发明人： WADA TOMOYUKI , SUGIOKA KOJI , TASHIRO HIDEO , TOYODA KOICHI
IPC分类号： B23K26/00 , B23K26/064 , B23K26/12 , B23K26/352 , G02F1/35
摘要： PURPOSE:To provide the device and the method for working by vacuum ultraviolet rays, by which many vacuum ultraviolet rays being suitable for working can be obtained, and also, variegated working can be executed with high accuracy. CONSTITUTION:A laser light from a laser light source 1 is constituted so as to be made incident on a Raman cell 4 through a mirror 2, and a condensing lens 3. In the Raman cell 4, a gas pressure controller 5 is provided. Vacuum ultraviolet rays generated by the Raman cell 4 are subjected to wavelength selection by a 60-degree dispersing prism 6, and radiated to a sample 12 held on a sample base 11 through a lens 8, a slit 9 and a mask 10 in a vacuum vessel 7. This sample base 11 is constituted so as to be movable between the inside of an optical path and the outside of the optical path, and in a state that the sample base 11 is moved to the outside of the optical path, the vacuum ultraviolet rays are made incident on a beam splitter 13, divided into two, and made incident on a fluorescent screen 14 and an output detecting machine 15.

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